How high is the Big Blue River at Shelbyville, IN right now?

The Big Blue River at Shelbyville, IN is currently flowing at 1,460 cubic feet per second with a gage height of 7.72 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Big Blue River at Shelbyville, IN normal for this time of year?

Current flow is classified as high for June 11. Today's discharge is at the 95th percentile compared to the long-term historical record at this gauge.

Is the Big Blue River at Shelbyville, IN at flood stage?

No — the gage height is 5.28 feet below the NWS flood-stage threshold of 13.0 feet.

What is the historical median flow for the Big Blue River at Shelbyville, IN on June 11?

The long-term median discharge for this date is 316 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 132 to 1,480 cfs.

Where is the Big Blue River at Shelbyville, IN stream gauge located?

The Big Blue River at Shelbyville, IN stream gauge is operated by the USGS in Shelby County, IN on the Big Blue River. USGS site number 03361500 (coordinates 39.5293, -85.7775).

Big Blue River at Shelbyville, IN

USGS Site No: 03361500 • Big Blue River • Shelby County, IN

Big Blue River at Shelbyville, IN on the Big Blue River is currently at 1,460 cfs (High — 95th percentile for this date) . Gage height: 7.72 ft.

Reading from 1 week ago

↑ Upstream on Big Blue River

Big Blue River at Carthage, IN

1,460

CFS Discharge

7.72

Gage Height (ft)

High

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	132
25th	Low threshold	185
50th (Median)	Normal (median)	316
75th	High threshold	493
95th	Very High threshold	1,480	Today: 1,460 cfs

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	3,830	—
May 27, 2026	1,460	—
May 26, 2026	825	—
May 25, 2026	1,050	—
May 24, 2026	1,430	—
May 23, 2026	1,620	—
May 22, 2026	1,630	—
May 21, 2026	2,810	—
May 20, 2026	3,350	—
May 19, 2026	4,030	—
May 18, 2026	729	—
May 17, 2026	387	—
May 16, 2026	414	—
May 15, 2026	444	—
Apr 21, 2026	194	—
Apr 20, 2026	202	—
Apr 19, 2026	214	—
Apr 18, 2026	217	—
Apr 17, 2026	220	—
Apr 16, 2026	231	—
Apr 15, 2026	235	—
Apr 14, 2026	237	—
Apr 13, 2026	243	—
Apr 12, 2026	246	—
Apr 11, 2026	258	—
Apr 10, 2026	273	—
Apr 9, 2026	282	—
Apr 8, 2026	298	—
Apr 7, 2026	328	—
Apr 6, 2026	370	—

Station Information

USGS Site No: 03361500
State: IN
County: Shelby County
Coordinates: 39.5293, -85.7775
Drainage Area: 421 mi²
Datum (ft): 737.2
HUC Code: 05120204

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 9.0 ft
Flood Stage: 13.0 ft
Moderate Flood: 15.0 ft
Major Flood: 18.0 ft

Currently 5.28 ft below flood stage.

Recent Extremes

Max discharge: 7,530 cfs

Mar 5, 2026
Min discharge: 63 cfs

Sep 21, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Brandywine Creek Near Fairland, IN
4.4 mi · 254 cfs

Very High
Buck Creek at Acton, IN
13.0 mi · 141 cfs

High
Sugar Creek at New Palestine, IN
14.0 mi · 113 cfs

High
Big Blue River at Carthage, IN
18.3 mi · 141 cfs

Normal
Lick Creek at Indianapolis, IN
21.2 mi · 13 cfs

High